GK-CDS-2009 MCQ Question and Answer
GK-CDS-2009 MCQ Question and Answer
41. Consider the following statements— X-rays
1. can pass through thin sheets of aluminium
2. can be deflected by magnetic field
3. move with a velocity less than the velocity of ultraviolet rays in vacuum
Which of the statements given above is/are correct ?
- 1, 2 and 3
- 1 only
- 2 and 3 only
- 1 and 2 only
42. If a small raindrop falls through air—
- its velocity goes on increasing
- its velocity goes on decreasing
- its velocity goes on increasing for some time and then becomes constant
- it falls with constant speed for some time and then its velocity increases
43. Television signal cannot be received generally beyond a particular distance due to—
- curvature of the earth
- weakness of antenna
- weakness of signal
- absorption of signal in air
44. Because of which one of the following factors, clouds do not precipitate in deserts ?
- Low pressure
- Low humidity
- High wind velocity
- High temperature
45. Which one of the following is an object with such a strong gravitational field that even light cannot escape from its surface ?
- Neutron star
- White dwarf
- Black hole
- Supernova star
46. Which one of the following is a medium range surface to air missile ?
- Trishul
- Nag
- Prithvi
- Akash
47. Match List-I with List-II and select the correct answer using the codes given below the lists :
List-I (Vitamin)
(a) Vitamin A
(b) Vitamin B1
(c) Vitamin C
(d) Vitamin E
List-II (Chemical Compound)
1. Thiamin
2. Retinol
3. Ascorbic acid
4. Tocopherol
Codes :
(a) (b) (c) (d)
- 4 1 3 2
- 2 3 1 4
- 4 3 1 2
- 2 1 3 4
48. Which one of the following is the tide produced as a consequence of moon and sun pulling the earth in the same direction ?
- Spring tide
- Neap tide
- High tide
- Low tide
49. Aqua regia used by alchemists to separate silver and gold is a mixture of—
- hydrochloric acid (concentrated) and nitric acid (concentrated)
- hydrochloric acid (concentrated and sulphuric acid (concentrated)
- nitric acid (concentrated) and sulphuric acid (concentrated)
- hydrochloric acid (dilute) and sulphuric acid (dilute)